1/* SPDX-License-Identifier: MIT */
 2/*
 3 * Copyright © 2021 Intel Corporation
 4 */
 5
 6#ifndef __INTEL_BACKLIGHT_H__
 7#define __INTEL_BACKLIGHT_H__
 8
 9#include <linux/types.h>
10
11struct drm_connector_state;
12struct intel_atomic_state;
13struct intel_connector;
14struct intel_crtc_state;
15struct intel_encoder;
16struct intel_panel;
17enum pipe;
18
19void intel_backlight_init_funcs(struct intel_panel *panel);
20int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe);
21void intel_backlight_destroy(struct intel_panel *panel);
22
23void intel_backlight_enable(const struct intel_crtc_state *crtc_state,
24			    const struct drm_connector_state *conn_state);
25void intel_backlight_update(struct intel_atomic_state *state,
26			    struct intel_encoder *encoder,
27			    const struct intel_crtc_state *crtc_state,
28			    const struct drm_connector_state *conn_state);
29void intel_backlight_disable(const struct drm_connector_state *old_conn_state);
30
31void intel_backlight_set_acpi(const struct drm_connector_state *conn_state,
32			      u32 level, u32 max);
33void intel_backlight_set_pwm_level(const struct drm_connector_state *conn_state,
34				   u32 level);
35u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 level);
36u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 level);
37u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val);
38
39#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
40int intel_backlight_device_register(struct intel_connector *connector);
41void intel_backlight_device_unregister(struct intel_connector *connector);
42#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
43static inline int intel_backlight_device_register(struct intel_connector *connector)
44{
45	return 0;
46}
47static inline void intel_backlight_device_unregister(struct intel_connector *connector)
48{
49}
50#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
51
52#endif /* __INTEL_BACKLIGHT_H__ */